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The difference between hard and soft water
Collect some hard water from a stream(or make some as defined in the next experiment). Also secure some soft water like as rain water or distilled water. Make some soap solution by dissolving soap shavings or powdered soap in a little warm water. Place equivalent amounts of hard and soft water in every of two bottles. Add soap solution to the soft water with a dropper, some drops at a time. Shake the bottle well after every addition. Count the number of drops of soap solution required to produce suds about 1 cm thick on the top.
what is the best part of the body??
How does the study of personality shed light onto behavior change for you? Answer: In general, personality means as the sums of the characteristics or traits of the person; to ot
what are the four characteristics of respiratory surface
Requirements Glassware like flask, petri plates, test tubes, pipettes isi infect ant Cleaning brush Liquid soap solution Bucket Enamel tray/steel tray Aluminium
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Define White Blood Corpuscles as Internal Defence Mechanism The white blood cells are probably the most important part of our immune system. You may recall reading about the wh
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Objectives After studying this unit, you should be able to: 1. Categorise different radiations into ionising and no ionising types, 2. Explain the effects of radiations
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